For brain cell nutrition drugs, the clinical course is mostly 14 days, and individual drugs can be extended to 21 days. Brain cell nutrition drugs clinically commonly used are brain activator, also known as brain protein hydrolysis injection, for brain protein hydrolysis injection is recommended to once a sedative 2-4, 60mg or 180mg into 250ml of saline, once a day, sedative 14 days, can play the role of brain cell nutrition, for the change of poor sleep, memory loss and plant nerve dysfunction have a certain effect. Other clinical drugs for brain cell nutrition include calf blood deprotein extract for injection, which is also a 14-day treatment course, and cytarabine tablets and cytarabine injection, which are also a 14-day treatment course. In individual patients, due to the severity of brain atrophy, the course of treatment can be extended to 21 days, and if the clinical effect is good, the follow-up oral treatment can be chosen after the static dose.